Оптимизация потенциальных циклов в деревьях

[ramainen]

$catalogs_ids=array(d()->this->id);
$catalogs_ids = array_merge( $catalogs_ids, d()->this->catalogs->all_of('id') ) ;
foreach(d()->this->catalogs as $catalog){
    $catalogs_ids = array_merge( $catalogs_ids, $catalog->catalogs->all_of('ids') );
}

d()->goods = d()->Good->where('catalog_id in (?)',$catalogs_ids);